It has 32 stations, including 10 transfer stations and is 36.18 km (22.48 mi) long, running through the city’s districts of Nanshan, Futian and Luohu.

Line 9 was previously known as the Meilin line (simplified Chinese: 梅林线; traditional Chinese: 梅林線; pinyin: Méilín Xiàn; Jyutping: mui4 lam4 sin3), and before that as the Neihuan line (simplified Chinese: 内环线; traditional Chinese: 內環線; pinyin: Nèihuán xiàn; Jyutping: noi6 waan4 sin3), which means an inner ring line.

[3] Construction of Line 9 started in 2012, with main stations completed in July 2014, other stations in March 2015 with tunnels planned for September 2016 and trial operation for October 2016.

Shenzhen Metro Line 3 Operations was responsible for construction and planning of the line, until their merger with SZMC (Shenzhen Metro Group) in April 2011.

17 trains will assume operations when the line first opens to passengers, departing every 6–8 minutes.